Purity analysis of hydrogen cyanide, cyanogen chloride and phosgene by quantitative13C NMR spectroscopy

2007 ◽  
Vol 45 (11) ◽  
pp. 954-961 ◽  
Author(s):  
Terry J. Henderson ◽  
David B. Cullinan
Keyword(s):  
Nmr Spectroscopy ◽  
Hydrogen Cyanide ◽  
Cyanogen Chloride ◽  
Purity Analysis ◽  
Quantitative13c Nmr

Accurate Quantitative13C NMR Spectroscopy:  Repeatability over Time of Site-Specific13C Isotope Ratio Determination

2007 ◽  
Vol 79 (21) ◽  
pp. 8266-8269 ◽  
Author(s):  
Elsa Caytan ◽  
Eliot P. Botosoa ◽  
Virginie Silvestre ◽  
Richard J. Robins ◽  
Serge Akoka ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Isotope Ratio ◽  
Ratio Determination ◽  
Quantitative13c Nmr ◽  
Over Time

3β-(Stearyloxy)olean-12-ene fromAustroplenckia populnea: Structure Elucidation by 2D-NMR and Quantitative13C-NMR Spectroscopy

2003 ◽  
Vol 86 (10) ◽  
pp. 3445-3449 ◽  
Author(s):  
S. A. Vieira Filho ◽  
L. P. Duarte ◽  
G. D. F. Silva ◽  
O. W. Howarth ◽  
I. S. Lula
Keyword(s):  
Nmr Spectroscopy ◽  
Structure Elucidation ◽  
2D Nmr ◽  
Quantitative13c Nmr

scholarly journals THE REACTIONS OF ACTIVE NITROGEN WITH CHLOROMETHANES

1958 ◽  
Vol 36 (9) ◽  
pp. 1223-1226 ◽  
Author(s):  
S. E. Sobering ◽  
C. A. Winkler
Keyword(s):  
Carbon Tetrachloride ◽  
Hydrogen Chloride ◽  
Hydrogen Cyanide ◽  
Active Nitrogen ◽  
Flow Rates ◽  
Product Yields ◽  
Gaseous Products ◽  
Cyanogen Chloride ◽  
Limiting Values ◽  
Reactant Flow

Cyanogen chloride and chlorine were the only gaseous products observed in the reaction of active nitrogen with carbon tetrachloride at 110° and 420 °C. The product yields tended towards limiting values at higher reactant flow rates, and increased with increase of temperature at all flow rates. The reactions of active nitrogen with chloroform and dichloromethane at 260° and 420 °C yielded hydrogen chloride, hydrogen cyanide, and cyanogen, in addition to cyanogen chloride and chlorine. The behavior of the product yields with reactant flow rates and temperature was similar to that of the products from carbon tetrachloride.

THE EFFECT OF ADDED VAPORS ON THE INFLAMMABILITY OF HYDROGEN CYANIDE

1948 ◽  
Vol 26b (6) ◽  
pp. 472-480 ◽  
Author(s):  
K. J. McCallum ◽  
W. Graham
Keyword(s):  
Hydrogen Cyanide ◽  
Room Temperature ◽  
Molar Ratio ◽  
Cyanogen Chloride

The limits of inflammability of hydrogen cyanide – air mixtures at room temperature and approximately 1 atm. pressure, have been determined to be 7.8 and 42.4 volume % of hydrogen cyanide. The effect of the addition of cyanogen chloride, phosgene, chloroform, hexane, heptane, and methyl chloroformate upon these limits has been investigated. It was found that the minimum molar ratio of added vapor to hydrogen cyanide that will produce a mixture that never becomes inflammable when progressively diluted with air is equal to 4.7 for cyanogen chloride, 0.86 for phosgene, and 1.1 for chloroform. All mixtures of hexane, heptane, and methyl chloroformate with hydrogen cyanide become inflammable when suitably diluted with air. For these systems, Le Chatelier's law, dealing with the composition of limit mixtures of two inflammable gases with air, was found to hold.

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